<template>
  <div>
    <h2>随机点名</h2>
    <div class="box">
      <span>名字是：</span>
      <div class="qs">{{ name }}</div>
    </div>
    <div class="btns">
      <button class="start" @click="start">开始</button>
      <button class="end" @click="over">结束</button>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      name: "",
      num: NaN,
      arr: [
        "小芳",
        "佳慧",
        "浩浩",
        "青青",
        "小利",
        "大立",
        "涵涵",
        "亮亮",
        "磊子",
      ],
    };
  },
  methods: {
    start() {
      this.NaN = setInterval(() => {
        this.name = this.arr[Math.floor(Math.random() * this.arr.length)];
      }, 200);
    },
    over() {
      clearInterval(this.NaN);
    },
  },
};
</script>

<style>
* {
  margin: 0;
  padding: 0;
}

h2 {
  text-align: center;
}

.box {
  width: 600px;
  margin: 50px auto;
  display: flex;
  font-size: 25px;
  line-height: 40px;
}

.qs {
  width: 450px;
  height: 40px;
  color: red;
}

.btns {
  text-align: center;
}

.btns button {
  width: 120px;
  height: 35px;
  margin: 0 50px;
}
</style>